diff --git a/integration-tests/gradle/libs.versions.toml b/integration-tests/gradle/libs.versions.toml
index 1c48da1..bc61893 100644
--- a/integration-tests/gradle/libs.versions.toml
+++ b/integration-tests/gradle/libs.versions.toml
@@ -4,7 +4,7 @@ android = "8.2.2"
 #noinspection NewerVersionAvailable
 kotest = "5.8.0"
 #noinspection NewerVersionAvailable
-kotlin = "1.9.22"
+kotlin = "1.8.22"
 #noinspection NewerVersionAvailable
 serialization = "1.5.1"
 
diff --git a/kotlin/build.gradle.kts b/kotlin/build.gradle.kts
index 757d9ca..7560a06 100644
--- a/kotlin/build.gradle.kts
+++ b/kotlin/build.gradle.kts
@@ -1,5 +1,6 @@
 import org.jetbrains.dokka.gradle.DokkaTask
-import org.jetbrains.kotlin.gradle.dsl.*
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.dsl.KotlinVersion
 
 plugins {
     alias(libs.plugins.android)
@@ -37,8 +38,8 @@ kotlin {
     sourceSets {
         configureEach {
             languageSettings {
-                apiVersion = KotlinVersion.KOTLIN_1_9.version
-                languageVersion = KotlinVersion.KOTLIN_1_9.version
+                apiVersion = KotlinVersion.KOTLIN_1_8.version
+                languageVersion = KotlinVersion.KOTLIN_1_8.version
                 optIn("kotlinx.serialization.ExperimentalSerializationApi")
             }
         }